CN103769396B - Fume desulfurizing tower on-line cleaning technique - Google Patents
Fume desulfurizing tower on-line cleaning technique Download PDFInfo
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- CN103769396B CN103769396B CN201410048723.9A CN201410048723A CN103769396B CN 103769396 B CN103769396 B CN 103769396B CN 201410048723 A CN201410048723 A CN 201410048723A CN 103769396 B CN103769396 B CN 103769396B
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- Prior art keywords
- cleaning
- flue gas
- clean
- cyclone separator
- gas washing
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- 238000004140 cleaning Methods 0.000 title claims abstract description 97
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000003009 desulfurizing effect Effects 0.000 title claims abstract description 11
- 239000003517 fume Substances 0.000 title claims abstract description 11
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000003546 flue gas Substances 0.000 claims abstract description 25
- 238000005406 washing Methods 0.000 claims abstract description 25
- 239000007921 spray Substances 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000011010 flushing procedure Methods 0.000 claims abstract description 5
- 230000007935 neutral effect Effects 0.000 claims abstract description 5
- 239000012459 cleaning agent Substances 0.000 claims description 17
- 230000009194 climbing Effects 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 6
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 3
- 239000004800 polyvinyl chloride Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 239000006184 cosolvent Substances 0.000 claims description 2
- 239000004094 surface-active agent Substances 0.000 claims description 2
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 239000002351 wastewater Substances 0.000 abstract description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 229910001424 calcium ion Inorganic materials 0.000 description 3
- 230000000536 complexating effect Effects 0.000 description 3
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 2
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 102000005262 Sulfatase Human genes 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 229940124274 edetate disodium Drugs 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 239000002195 soluble material Substances 0.000 description 1
- 239000007785 strong electrolyte Substances 0.000 description 1
- 108060007951 sulfatase Proteins 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/023—Cleaning the external surface
Abstract
The invention discloses a kind of fume desulfurizing tower on-line cleaning technique, comprise following technological process: 1) first clean for the dirt bottom flue gas washing cleaning system; 2) the cleaning and dredging work of water-supply-pipe bottom cyclone separator pipe is carried out again; 3) in whole cleaning, the position control of spray thrower is accurate; 4) utilize the forward of high-pressure water jet or tangential impact by the surface cleaned a little, jet reaches the object of clean in place; 5) large water gaging is utilized to carry out the flushing of cyclone separator pipe one by one, by clean for cyclone separator pipe cleaning down.Present invention process is with strong points, and cleaning thoroughly, has the following advantages: cleaning process is clear and definite, can clean online.Waste water after cleaning is neutral, free from environmental pollution.Cleaning performance is good, is cleaned again to Integral cleaning, without dead angle to local by Integral cleaning.
Description
Technical field
The present invention relates to a kind of cleaning, be specifically related to a kind of fume desulfurizing tower on-line cleaning technique.
Background technology
Current industrial desulfurizer generally uses, and the flue gas washing cleaning system longtime running of these desulfurizers can produce a large amount of sulfate scale and other dirt, affect desulfurized effect, therefore snaking process will be carried out after operation a period of time, past flue gas washing cleaning system stain eliminating technology just can must carry out after arrestment operation, impact is produced and limitation is strong, and main method is:
1) common chemical cleaning method has two kinds, and one is use NaOH soda boiling, and sulfate conversion is become to be soluble in the material of acid, reaction equation is as follows:
this kind of technique time used is longer, and only the soda boiling time just needs 4-6 days, and institute's alkali charge is very big, after also need to carry out pickling, strong to equipment corrosion, discharging of waste liquid difficulty, large to environmental hazard.
Another kind method adopts the agent of organic polymer complexing cleaning to carry out complexing cleaning, such as use EDETATE DISODIUM, the micro-calcium ion relying on the powerful complexing power of medicament self to capture calcium sulfate to ionize out, promote the movement of dissolution equilibrium, calcium ion the most at last in calcium sulfate is all converted to EDTA chelating calcium, and reaction equation is as follows:
(slightly soluble material is strong electrolyte)
(x maximum is 6)
The trace amount calcium ion that this reaction ionizes out by consuming calcium sulfate, promotes that dissolution equilibrium moves, and finally all dissolves, the coordination balance that simultaneous is new.This process institute with medicament host is expensive, and because reaction is comparatively slow, institute's dosage is surprising, and effect is undesirable, deficiency in economic performance.
2) carrying out Cleaning by High Pressure Water Jet to flue gas washing cleaning system is also another kind of selection, in the high-pressure water jet situation of hundreds of kilograms of pressure, some dirty things can be washed, but due to the concave convex groove structure on heat exchange element surface, online water under high pressure can not thoroughly remove dirty thing, the groove that accumulates over a long period is filled, and form the hard incrustation scale can not washed off by online high pressure water flushing gradually, therefore online Cleaning by High Pressure Water Jet strictly says the effect can only playing dredging, and on-line cleaning effect is poor time by time.
Summary of the invention
Object of the present invention is exactly the defect existed for prior art, provides a kind of fume desulfurizing tower on-line cleaning technique, make it can be issued to cleaning performance in the situation of not stopping, and cleaning agent used is corrosion-free to equipment, to environment without harm.Utilize the severe internal system of mechanical entered environment to reach and well clean object.
Its technical scheme is: a kind of fume desulfurizing tower on-line cleaning technique, comprises following technological process:
1) first clean for the dirt bottom flue gas washing cleaning system, specific cleaning agent is joined in the circulation fluid bottom flue gas washing cleaning system, utilize the circulating pump wash cycles bottom flue gas washing cleaning system, make the dirt Chemical cleaning at the bottom of tower clean, ensure not to be embedded in dirty layer bottom flue gas washing cleaning system water-supply-pipe;
2) after the Fouling Cleaning bottom flue gas washing cleaning system completes, carry out the cleaning and dredging work of water-supply-pipe bottom cyclone separator pipe again, first open manhole, make the cleaning that climbing mechanism guarantees to perform every cyclone separator pipe, traction shower is advanced, enclose around flue gas washing cleaning system one, make every cyclone separator pipe of the corresponding flue gas washing cleaning system of wiper mechanism, spray position and want accurately, sprinkling cleaning agent is carried out in timing, continue to carry out, detect and observe cleaning performance;
3) in whole cleaning, whether accurate the position control of spray thrower is, relation cleaning performance, in order to the position of spray thrower is accurate, on the basis of original manhole, more suitably increases the quantity of hand hole.Cleaning agent meets washer cleaning regulation, and market demand performs in Chemical cleaning, the suspended solids content in cleaning agent should be remained on below 0.5%-wt, chloride content is remained on below 750mg/L, and by total dissolved solidss, i.e. the actual measurement sulfate of TDS, SO
4 2-remain on below 7.0%wt;
4) utilize the forward of high-pressure water jet or tangential impact by the surface cleaned a little, jet produces enough pressure on dirty layer or sedimental surface makes this softening dirty layer pulverize, once dirty layer is penetrated, fluid is between Wedge insertion dirt layer and cleaning part surface, dirty pull-up fallen and exposes by the surface of cleaning point, reaching the object of clean in place;
5) large water gaging is utilized to carry out the flushing of cyclone separator pipe one by one, by clean for cyclone separator pipe cleaning down.
Described specific cleaning agent is neutral sulfatase cleaning agent, and pH value is between 7-7.5.Comprising a kind of special climbing mechanism in described technique, is stainless steel, with pulley and spray line fixture.The cleaning agent of described sprinkling is neutral cleaners, also comprises surfactant and the cosolvent of 1-2%.The shower of described climbing mechanism traction is polyvinyl chloride material.
Present invention process is with strong points, and cleaning thoroughly, has the following advantages:
1, cleaning process is clear and definite, can clean online.
2, the waste water after cleaning is neutral, free from environmental pollution.
3, cleaning performance is good, is cleaned again to Integral cleaning, without dead angle to local by Integral cleaning.
Accompanying drawing explanation
Fig. 1 is the side schematic view of climbing mechanism in the present invention.
Detailed description of the invention
A kind of fume desulfurizing tower on-line cleaning technique, comprise following technological process 1) first clean for the dirt bottom flue gas washing cleaning system, specific cleaning agent is joined in the circulation fluid bottom flue gas washing cleaning system, utilize the circulating pump wash cycles bottom flue gas washing cleaning system, make the dirt Chemical cleaning at the bottom of tower clean, ensure not to be embedded in dirty layer bottom flue gas washing cleaning system water-supply-pipe; 2) after the Fouling Cleaning bottom flue gas washing cleaning system completes, then the cleaning and dredging work of water-supply-pipe bottom cyclone separator pipe is carried out.First manhole is opened, make climbing mechanism (guaranteeing to perform the cleaning of every cyclone separator pipe), traction shower is advanced, enclose around flue gas washing cleaning system one, make every cyclone separator pipe of the corresponding flue gas washing cleaning system of wiper mechanism, spray position and want accurately, sprinkling cleaning agent is carried out in timing, continue to carry out, detect and observe cleaning performance; 3) in whole cleaning, whether accurate the position control of spray thrower is, relation cleaning performance, in order to the position of spray thrower is accurate, on the basis of original manhole, more suitably increases the quantity of hand hole.Cleaning agent meets washer cleaning regulation, and market demand performs in Chemical cleaning, the suspended solids content in cleaning agent should be remained on below 0.5%-wt, chloride content is remained on below 750mg/L, and by total dissolved solidss, i.e. the actual measurement sulfate of TDS, SO
4 2-remain on below 7.0%wt; 4) utilize the forward of high-pressure water jet or tangential impact by the surface cleaned a little, jet produces enough pressure on dirty layer or sedimental surface makes this softening dirty layer pulverize, once dirty layer is penetrated, fluid is between Wedge insertion dirt layer and cleaning part surface, dirty pull-up fallen and exposes by the surface of cleaning point, reaching the object of clean in place;
5) large water gaging is utilized to carry out the flushing of cyclone separator pipe one by one, by clean for cyclone separator pipe cleaning down.
As shown in Figure 1, for climbing mechanism side schematic view in technique 2, its main material is stainless steel pipe, comprises polyvinyl chloride shower 1, spherical pulley 2, shower fixed mount 3, telescopic movable connecting rod 4, front haulage draw ring 5, rear propelling movement ring 6,60 degree of moving fulcrums 7, lightweight rotary nozzles 8.
Wherein, main body adopts stainless steel, ensures reusable, prevents the corrosion in cleaning equipment inside.Adopt hollow pipe, not only tube wall 2mm, reaches desirable strength but also make its overall weight lighter.
Pulley 2 adopts spherical, makes it can be freely movable after contacting with contact surface.
Devise shower fixed mount 3, shower and main body are fixed together, make it with bulk motion.
Movable connecting rod 4 is extension type, can regulate, play a supporting role according to cyclone separator caliber in institute's cleaning equipment.
Front haulage draw ring 5 and rear propelling movement ring 6 play the effect that power transmits point, available artificial or machinery as power, using stereoplasm tube or soft rope as connection.
60 degree of moving fulcrums 7, design activity angle is 60 degree, prevents from swinging up and down.
Lightweight rotary nozzle 8, carries out comprehensive spray automatically.
Although the embodiment disclosed by the present invention is as above, the embodiment that described content just adopts for the ease of understanding the present invention, and be not used to limit the present invention.Technical staff in any the technical field of the invention; under the prerequisite not departing from the spirit and scope disclosed by the present invention; any amendment and change can be done what implement in form and in details; but scope of patent protection of the present invention, the scope that still must define with appending claims is as the criterion.
Claims (4)
1. fume desulfurizing tower on-line cleaning technique, is characterized in that: comprise following technological process:
1) first clean for the dirt bottom flue gas washing cleaning system, specific cleaning agent is joined in the circulation fluid bottom flue gas washing cleaning system, utilize the circulating pump wash cycles bottom flue gas washing cleaning system, make the dirt Chemical cleaning at the bottom of tower clean, ensure not to be embedded in dirty layer bottom flue gas washing cleaning system water-supply-pipe;
2) after the Fouling Cleaning bottom flue gas washing cleaning system completes, carry out the cleaning and dredging work of water-supply-pipe bottom cyclone separator pipe again, first open manhole, make the cleaning that climbing mechanism guarantees to perform every cyclone separator pipe, traction shower is advanced, enclose around flue gas washing cleaning system one, make every cyclone separator pipe of the corresponding flue gas washing cleaning system of wiper mechanism, spray position and want accurately, sprinkling cleaning agent is carried out in timing, continue to carry out, detect and observe cleaning performance;
3) in whole cleaning, whether accurate the position control of spray thrower is, relation cleaning performance, in order to the position of spray thrower is accurate, on the basis of original manhole, suitably increase the quantity of hand hole again, cleaning agent meets washer cleaning regulation, and market demand performs in Chemical cleaning, suspended solids content in cleaning agent should be remained on below 0.5%-wt, chloride content is remained on below 750mg/L, and by total dissolved solidss, i.e. the actual measurement sulfate SO of TDS
4 2-, remain on below 7.0%wt;
4) utilize the forward of high-pressure water jet or tangential impact by the surface cleaned a little, jet produces enough pressure on dirty layer or sedimental surface makes this softening dirty layer pulverize, once dirty layer is penetrated, fluid is between Wedge insertion dirt layer and cleaning part surface, dirty pull-up fallen and exposes by the surface of cleaning point, reaching the object of clean in place;
5) large water gaging is utilized to carry out the flushing of cyclone separator pipe one by one, by clean for cyclone separator pipe cleaning down.
2. fume desulfurizing tower on-line cleaning technique according to claim 1, it is characterized in that: comprise a kind of special climbing mechanism in described technique, is stainless steel, with pulley and spray line fixture.
3. fume desulfurizing tower on-line cleaning technique according to claim 1, is characterized in that: the cleaning agent of described sprinkling is neutral cleaners, also comprises surfactant and the cosolvent of 1-2%.
4. fume desulfurizing tower on-line cleaning technique according to claim 1, is characterized in that: the shower of described climbing mechanism traction is polyvinyl chloride material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410048723.9A CN103769396B (en) | 2014-02-12 | 2014-02-12 | Fume desulfurizing tower on-line cleaning technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410048723.9A CN103769396B (en) | 2014-02-12 | 2014-02-12 | Fume desulfurizing tower on-line cleaning technique |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103769396A CN103769396A (en) | 2014-05-07 |
| CN103769396B true CN103769396B (en) | 2016-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410048723.9A Active CN103769396B (en) | 2014-02-12 | 2014-02-12 | Fume desulfurizing tower on-line cleaning technique |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104043623A (en) * | 2014-06-30 | 2014-09-17 | 赖禄波 | Method for cleaning desulfurizing tower |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2214239Y (en) * | 1995-01-10 | 1995-12-06 | 湘潭大学 | Flushing device for descaling and scale prevention of heat transfer tube |
| CN2373198Y (en) * | 1999-04-28 | 2000-04-12 | 吴元华 | On-line preventing and descaling device |
| DE10259103B3 (en) * | 2002-12-18 | 2004-08-05 | Otto Kamp Gmbh | Pipeline system cleaning method e.g. for cold and/or hot water supply system, using cleaning solution for removing pipeline deposits |
| CN201249100Y (en) * | 2008-07-16 | 2009-06-03 | 上海迪浩环保科技有限公司 | Rotary spray thionizer |
| CN102772991A (en) * | 2011-05-11 | 2012-11-14 | 姚茂洪 | Alkaline washing tank, washing tower and adsorption tank system |
| CN102965682A (en) * | 2012-12-18 | 2013-03-13 | 常州大学 | Blast furnace water-cooling wall water scale rapid washing and heat transfer enhancement device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040250842A1 (en) * | 2003-06-10 | 2004-12-16 | Adams John A. | Device and method for cleaning a tube |
| JP4885531B2 (en) * | 2005-12-13 | 2012-02-29 | 株式会社四電工 | Observation jig and coating method in steel pipe |
| JP2007319757A (en) * | 2006-05-31 | 2007-12-13 | Azuma Toso Kk | Device for surface preparation of inner surface of piping body |
-
2014
- 2014-02-12 CN CN201410048723.9A patent/CN103769396B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2214239Y (en) * | 1995-01-10 | 1995-12-06 | 湘潭大学 | Flushing device for descaling and scale prevention of heat transfer tube |
| CN2373198Y (en) * | 1999-04-28 | 2000-04-12 | 吴元华 | On-line preventing and descaling device |
| DE10259103B3 (en) * | 2002-12-18 | 2004-08-05 | Otto Kamp Gmbh | Pipeline system cleaning method e.g. for cold and/or hot water supply system, using cleaning solution for removing pipeline deposits |
| CN201249100Y (en) * | 2008-07-16 | 2009-06-03 | 上海迪浩环保科技有限公司 | Rotary spray thionizer |
| CN102772991A (en) * | 2011-05-11 | 2012-11-14 | 姚茂洪 | Alkaline washing tank, washing tower and adsorption tank system |
| CN102965682A (en) * | 2012-12-18 | 2013-03-13 | 常州大学 | Blast furnace water-cooling wall water scale rapid washing and heat transfer enhancement device |
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| Publication number | Publication date |
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| CN103769396A (en) | 2014-05-07 |
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Denomination of invention: On-line cleaning process for fuel gas desulfurizing tower Effective date of registration: 20161213 Granted publication date: 20160420 Pledgee: Dongying rural commercial bank Limited by Share Ltd. Shengli branch Pledgor: SHANDONG TIFON CLEANING TECHNOLOGY CO.,LTD. Registration number: 2016990001103 |
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Denomination of invention: On line cleaning process of flue gas desulfurization tower Effective date of registration: 20211123 Granted publication date: 20160420 Pledgee: Dongying Rural Commercial Bank Co.,Ltd. Pledgor: SHANDONG TIFON CLEANING TECHNOLOGY CO.,LTD. Registration number: Y2021980012954 |
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